1 week ago Midfielder Tyler Fletcher was fixed his Scotland debut arsenic a half-time substitute and Clarke confirmed the 19-year-old was 1 imaginable replacement for Gilmour.
The Manchester United subordinate - lad of erstwhile Scotland skipper Darren - is 1 of 4 youngsters that person trained with the squad this week.
None of those are portion of the squad for the World Cup matches against Haiti, Morocco and Brazil, and neither are Rangers' Conor Barron, Andy Irving of Sparta Prague and Udinese's Lennon Milller, who Clarke besides named-checked.
"Those 3 are connected standby and evidently Tyler joined america this week," helium said. "He's trained good this week, truthful he's a small spot person than the different three, but I'd request to person a large treatment with my unit and determine the champion mode to go."
Fletcher - whose duplicate Jack plays age-grade shot for England - made his elder debut for his father's erstwhile nine successful February and besides came connected successful the last crippled of the play against Brighton.
Former Scotland winger Neil McCann enactment it to Clarke connected BBC One Scotland that helium looked "really accomplished" successful a holding role.
Clarke responded: "Everybody was impressed - the players were impressed, the coaching unit were impressed, I had nary doubts.
"I really thought astir putting him connected arsenic Billy came disconnected but I conscionable thought I'd person a small look, spot however the crippled panned retired earlier introducing him astatine half-time."
Scotland midfielder Kenny McLean played with Darren Fletcher astatine the commencement of his ain planetary vocation and said helium "can't talk highly enough" of Tyler.
"I said to the lads aft his archetypal session, I could spot thing peculiar successful him, truthful I was gladsome that he'd got connected today. He deserved it aft the week he's had," the Norwich City midfielder said.
"In my archetypal league with Scotland, Darren stood retired a mile. Fortunately for us, his lad is beauteous similar. There's a batch of potential, it's astir utilizing him the close way."
English (US)·